Remove excess water from the tofu with a paper towel and mash it.
Drain the oil from the tuna and prepare it.
Finely chop the chili pepper, onion, and green onion.
Add all ingredients (tofu, tuna, chopped vegetables, ssamjang) into a bowl and mix well.
Heat oil in a pan and stir-fry the mixed ingredients.
Transfer the finished tofu tuna ssamjang to a serving dish.